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Liquid water flowed across the surface of the asteroid that birthed the near-Earth object (NEO) Ryugu much later than scientists had thought possible, a new study finds. The discovery that

Smacking a planet-threatening asteroid comes with big responsibility. If we slam an impactor into an asteroid in exactly the wrong spot, the space rock may pass through a “gravitational keyhole”

Saturn is putting on a spectacular show this month as it reaches opposition overnight on Sept. 20. The Celestron StarSense Explorer DX 130AZ is a great value telescope that can

The Laser Interferometer Gravitational-Wave Observatory (LIGO) is celebrating 10 years of cutting-edge gravitational wave science by confirming predictions made by physics luminaries Albert Einstein, Stephen Hawking and Roy Kerr —

Since February 2021, NASA’s Perseverance rover has been exploring a region on Mars known as Jezero Crater, a huge cavity believed to have once hosted a lake. It’s considered one

SpaceX sent 21 satellites to orbit from California today (Sept. 10), beginning the buildout of an advanced new constellation for the U.S. military. A Falcon 9 rocket launched from Vandenberg

The Celestron TrailSeeker 8x42mm binoculars are one of the best binoculars on the market. They hold the title as best binoculars under $300 in our binoculars buying guide, and represent

On March 2-4, 2026, a total lunar eclipse will be visible from Western North America, Australia, New Zealand and East Asia, with a “blood moon” appearing for 58 minutes. Lunar

In the high-altitude desert of northern Chile sits the Atacama Large Millimeter/submillimeter Array (ALMA). Conceived as a partnership among scientists in Europe, North America, East Asia, and Chile, ALMA was

The odd dwarf planet Quaoar might have a brand-new moon. Observations of the tiny world, made by a pair of astronomers in California, suggest it possesses either a second satellite